parkinson`s disease is a degenerative disease of the neurological system that affects the brain, impairs motor coordination and

affected aging amnesia brain cell central check close dementia deterioration disease dopamine hand holding horizontal illness impairment loss medical memory movement muscle nausea nerve nervous neurodegenerative neurological neurology neuron neuronal one paralysis parkinson parkinsons people person process rendering rigidity senior seventies shake stuffing symptom symptoms system the trembling tremor